synchronous machine

A three-phase, 50Hz, star-connected cylindrical-rotor synchronous machine is running as a motor. The machine is operated from a 6.6 kV grid and draws current at unity power factor...

A star connected 400 V, 50 Hz, 4 pole synchronous machine gave the following open circuit and short circuit test results: Open circuit test: V OC = 400 V (rms, line–to–line) at fie...

In a synchronous machine, hunting is predominantly damped by

A $$100$$ $$kVA$$, $$415V,$$ star connected synchronous machine generates rated open circuit voltage $$415V$$ at a field current of $$15A.$$ The short circuit armature current at a...

Following are some of the properties of rotating electrical machines P. Stator winding current is dc, rotor-winding current is ac Q. Stator winding current is ac, rotor-winding cur...

X d , X d ' and X d " are steady stated-axis synchronous reactance, transient d-axis reactance and sub-transient d-axis reactance of a synchronous machine respectively. Which of th...

During a disturbance on synchronous machine, the rotor swings from A to B before finally settling down to a steady state at a point C on the power angle curve. The speed of the mac...

The torque angle of a synchronous machine operating from a constant voltage bus, is usually defined as the space angle between